Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method performed by a user equipment in a wireless communication system, the method comprising: receiving, from a base station, data on a downlink data channel; determining whether a scheduling type of the downlink data channel is persistent or non-persistent; and transmitting, to the base station, acknowledgement/negative acknowledgement (ACK/NACK) information for the data, wherein, when the scheduling type is non-persistent, the ACK/NACK information is transmitted on a first resource determined according to a downlink control channel corresponding to the data, and wherein, when the scheduling type is persistent the ACK/NACK information for an initial persistent data transmission is transmitted on a second resource determined according to the downlink control channel, and the ACK/NACK information for a following persistent data transmission is transmitted on a third resource determined by using resource information received via high-layer signaling.
This invention relates to wireless communication systems, specifically to methods for transmitting acknowledgement/negative acknowledgement (ACK/NACK) information from user equipment (UE) to a base station. The problem addressed is the efficient handling of ACK/NACK transmissions for both persistent and non-persistent downlink data scheduling types. Persistent scheduling involves pre-allocated resources for repeated transmissions, while non-persistent scheduling dynamically allocates resources per transmission. The method involves a UE receiving data on a downlink data channel from a base station. The UE then determines whether the scheduling type of the downlink data channel is persistent or non-persistent. For non-persistent scheduling, the UE transmits ACK/NACK information on a first resource, which is determined based on a downlink control channel corresponding to the data. For persistent scheduling, the UE transmits ACK/NACK for the initial persistent data transmission on a second resource, also determined by the downlink control channel. For subsequent persistent data transmissions, the UE transmits ACK/NACK on a third resource, which is determined using resource information received via high-layer signaling. This approach optimizes resource allocation and reduces signaling overhead by leveraging pre-configured resources for persistent transmissions while dynamically assigning resources for non-persistent transmissions.
2. The method of claim 1 , wherein the first resource is further determined based on an index of a resource for the downlink control channel.
A system and method for wireless communication involves determining a first resource for transmitting a downlink control channel based on an index of a resource for the downlink control channel. The downlink control channel carries control information for downlink data transmission in a wireless network. The method includes selecting the first resource from a set of available resources, where the selection is influenced by the index of the resource for the downlink control channel. This ensures efficient allocation and management of resources in the network, reducing interference and improving communication reliability. The index may be derived from a predefined mapping or dynamically assigned based on network conditions. The method further includes transmitting the downlink control channel on the selected first resource, allowing a receiving device to decode the control information and subsequently receive the downlink data. The approach optimizes resource utilization and enhances signal integrity in wireless communication systems.
3. The method of claim 1 , wherein the determination of the scheduling type is based on a part of control information on the downlink control channel.
A system and method for wireless communication involves determining a scheduling type for data transmission based on control information received over a downlink control channel. The scheduling type indicates whether the transmission is dynamically scheduled or semi-persistently scheduled. The method includes receiving control information on the downlink control channel, extracting a portion of the control information that specifies the scheduling type, and using this information to configure the transmission accordingly. For dynamic scheduling, the control information may include resource allocation, modulation and coding scheme, and other parameters for each transmission. For semi-persistent scheduling, the control information may establish a periodic transmission pattern with predefined parameters, reducing the need for repeated signaling. The system may be implemented in a wireless communication device, such as a user equipment or a base station, to optimize resource utilization and reduce signaling overhead. The method ensures efficient use of downlink control resources by leveraging control information to dynamically or semi-persistently schedule transmissions based on network conditions and traffic patterns.
4. The method of claim 3 , wherein the control information includes resource allocation information for the data and modulation and coding scheme (MCS) information for the data.
This invention relates to wireless communication systems, specifically to methods for transmitting control information in a wireless network. The problem addressed is the efficient and reliable transmission of control information to support data communication between a base station and a user device. The invention provides a method where control information is transmitted to a user device, where the control information includes resource allocation information for data transmission and modulation and coding scheme (MCS) information for the data. The resource allocation information specifies the time, frequency, or code resources allocated for the data transmission, while the MCS information defines the modulation and coding parameters to be used for the data. This allows the user device to properly receive and decode the data based on the allocated resources and the specified modulation and coding scheme. The method ensures that the user device can efficiently utilize the allocated resources and adapt to varying channel conditions by adjusting the modulation and coding scheme accordingly. This improves the reliability and efficiency of data transmission in wireless communication systems.
5. A user equipment in a wireless communication system, the user equipment comprising: a transceiver; and a controller configured to: receive, from a base station via the transceiver, data on a downlink data channel; determine whether a scheduling type of the downlink data channel is persistent or non-persistent; and transmit, to the base station via the transceiver, acknowledgement/negative acknowledgement (ACK/NACK) information for the data, wherein, when the scheduling type is non-persistent, the ACK/NACK information is transmitted on a first resource determined according to a downlink control channel corresponding to the data, and wherein, when the scheduling type is persistent, the ACK/NACK information for an initial persistent data transmission is transmitted on a second resource determined according to the downlink control channel, and the ACK/NACK information for a following persistent data transmission is transmitted on a third resource determined by using resource information received via high-layer signaling.
This invention relates to wireless communication systems, specifically to user equipment (UE) handling acknowledgment/negative acknowledgment (ACK/NACK) transmissions for downlink data. The problem addressed is the efficient management of ACK/NACK feedback for both persistent and non-persistent scheduling types in wireless networks. The UE includes a transceiver and a controller. The transceiver receives downlink data from a base station on a downlink data channel. The controller determines whether the scheduling type of the downlink data channel is persistent or non-persistent. For non-persistent scheduling, the UE transmits ACK/NACK information on a first resource, which is determined based on a downlink control channel associated with the data. For persistent scheduling, the UE transmits ACK/NACK for the initial persistent data transmission on a second resource, also determined by the downlink control channel. For subsequent persistent data transmissions, the UE transmits ACK/NACK on a third resource, which is determined using resource information received via high-layer signaling. This approach optimizes resource allocation and reduces signaling overhead by dynamically adjusting ACK/NACK transmission resources based on the scheduling type.
6. The user equipment of claim 5 , wherein the first resource is further determined based on an index of a resource for the downlink control channel.
The invention relates to wireless communication systems, specifically to user equipment (UE) configured to determine communication resources for downlink control channels. In wireless networks, efficient resource allocation is critical for reliable data transmission. A key challenge is dynamically assigning resources for downlink control channels while minimizing interference and optimizing spectral efficiency. The UE includes a processor and memory storing instructions that, when executed, cause the UE to determine a first resource for receiving a downlink control channel. This determination is based on an index of a resource for the downlink control channel, which helps the UE identify the specific time-frequency resources allocated for control signaling. The resource index may be derived from system parameters, such as cell identifiers or synchronization signals, ensuring coordinated resource allocation across the network. The UE also receives downlink control information (DCI) on the determined resource, enabling it to decode subsequent downlink data transmissions. This method improves resource utilization by dynamically adapting to network conditions and reducing collisions with other UEs. The invention enhances downlink control channel reliability and efficiency in wireless communication systems.
7. The user equipment of claim 5 , wherein the determination of the scheduling type is based on a part of control information on the downlink control channel.
This invention relates to wireless communication systems, specifically to user equipment (UE) that determines the scheduling type for uplink transmissions based on control information received on a downlink control channel. The problem addressed is the need for efficient and flexible scheduling in wireless networks, where UEs must adapt to different scheduling modes to optimize resource usage and reduce latency. The UE includes a receiver configured to obtain control information from a downlink control channel, such as a Physical Downlink Control Channel (PDCCH) in LTE or 5G NR. The control information contains scheduling directives that dictate how the UE should allocate uplink resources. The UE further includes a processor that analyzes a specific part of this control information to determine the scheduling type, which could be dynamic scheduling, semi-persistent scheduling (SPS), or configured grant (CG) scheduling. Dynamic scheduling involves explicit resource allocation for each transmission, while SPS and CG allow pre-configured periodic transmissions without frequent signaling. By parsing the control information, the UE identifies the scheduling type and adjusts its uplink transmission behavior accordingly, ensuring efficient resource utilization and minimizing signaling overhead. This approach enhances network performance by reducing latency and improving spectral efficiency.
8. The user equipment of claim 7 , wherein the control information includes resource allocation information for the data and modulation and coding scheme (MCS) information for the data.
The invention relates to wireless communication systems, specifically to user equipment (UE) configured to receive and process control information from a network. The problem addressed is the efficient transmission and decoding of control information to enable reliable data communication in wireless networks. The UE is designed to receive control information that includes resource allocation details for data transmission, specifying which time-frequency resources are assigned for the data. Additionally, the control information contains modulation and coding scheme (MCS) information, which defines the modulation type and coding rate used for the data. This allows the UE to correctly interpret and decode the transmitted data based on the allocated resources and the specified MCS. The UE processes this control information to determine how to receive and decode the data, ensuring proper synchronization and error-free communication. The invention improves data transmission efficiency and reliability by providing clear resource allocation and MCS details, enabling the UE to adapt to varying channel conditions and network demands.
9. A method performed by a base station in a wireless communication system, the method comprising: determining a scheduling type of a downlink data channel as either persistent or non-persistent; transmitting, to a user equipment, data on the downlink data channel based on the determination; and receiving, from the user equipment, acknowledgment/negative acknowledgment (ACK/NACK) information for the data, wherein, when the scheduling type is non-persistent, the ACK/NACK information is received on a first a resource determined according to a downlink control channel, and wherein, when the scheduling type is persistent, the ACK/NACK information for an initial persistent data transmission is received on a second resource determined according to the downlink control channel, and the ACK/NACK information for a following persistent data transmission is received on a third resource determined by using resource information transmitted via-a high-layer signaling.
In wireless communication systems, efficient scheduling of downlink data channels is critical for managing resources and ensuring reliable data transmission. A base station may dynamically or persistently schedule downlink data to a user equipment (UE). Persistent scheduling is used for periodic or semi-persistent transmissions, reducing signaling overhead by reusing the same resource allocation without repeated control signaling. Non-persistent scheduling, however, requires explicit resource allocation for each transmission. This invention describes a method for handling acknowledgment/negative acknowledgment (ACK/NACK) feedback from a UE based on the scheduling type. For non-persistent scheduling, the base station transmits data on a downlink data channel and receives ACK/NACK feedback on a first resource, which is determined by a downlink control channel. For persistent scheduling, the base station first transmits initial data and receives ACK/NACK feedback on a second resource, also determined by the downlink control channel. For subsequent persistent transmissions, the base station receives ACK/NACK feedback on a third resource, which is determined using resource information provided via higher-layer signaling. This approach optimizes feedback handling by dynamically adjusting resource allocation based on the scheduling type, improving efficiency and reliability in wireless communication systems.
10. The method of claim 9 , wherein the first resource is further determined based on an index of a resource for the downlink control channel.
In wireless communication systems, efficient resource allocation for downlink control channels is critical for reliable and low-latency data transmission. The invention addresses the challenge of dynamically selecting and managing resources for downlink control channels to optimize performance and reduce interference. The method involves determining a first resource for the downlink control channel based on an index of a resource. This index is derived from a predefined set of resources, ensuring that the selected resource aligns with system requirements and avoids conflicts with other transmissions. The resource index may be calculated using parameters such as time slots, frequency bands, or other system-specific identifiers. By incorporating the resource index into the selection process, the method ensures that the downlink control channel operates efficiently within the available spectrum, minimizing resource wastage and enhancing signal integrity. The approach is particularly useful in dense network environments where resource allocation must be precise to maintain communication quality. The method may also integrate with other resource management techniques, such as interference mitigation and load balancing, to further improve system performance. The invention provides a scalable solution for dynamically assigning downlink control channel resources, adapting to varying network conditions and traffic demands.
11. The method of claim 9 , wherein the scheduling type is associated with a part of control information on the downlink control channel.
A method for wireless communication involves scheduling data transmissions in a wireless network, particularly in scenarios where multiple scheduling types are supported. The method addresses the challenge of efficiently managing different scheduling types to optimize resource allocation and reduce signaling overhead. The scheduling type is linked to a specific part of control information transmitted on a downlink control channel, allowing the network to dynamically assign scheduling configurations based on traffic conditions, device capabilities, or other operational factors. This approach enables flexible and adaptive scheduling, improving overall system efficiency. The method may also involve determining a scheduling type for a user device based on predefined criteria, such as channel conditions or service requirements, and transmitting the scheduling type to the device via the downlink control channel. The control information may include fields or indicators that explicitly or implicitly signal the scheduling type, ensuring that the user device can correctly interpret and apply the scheduling configuration. By associating the scheduling type with a designated part of the control information, the method ensures clear and efficient communication of scheduling decisions, reducing ambiguity and improving reliability in wireless data transmission.
12. The method of claim 11 , wherein the control information includes resource allocation information for the data and modulation and coding scheme (MCS) information for the data.
This invention relates to wireless communication systems, specifically methods for transmitting control information to facilitate data communication between devices. The problem addressed is the efficient and reliable transmission of control information that enables proper data reception, particularly in scenarios where resources must be dynamically allocated and modulation schemes must be adaptively selected. The method involves generating control information that includes two key components: resource allocation information and modulation and coding scheme (MCS) information. The resource allocation information specifies the communication resources (e.g., time, frequency, or code resources) assigned for transmitting the data. The MCS information defines the modulation and coding parameters (e.g., modulation type, coding rate, or error correction scheme) to be applied to the data to ensure reliable transmission under varying channel conditions. The control information is transmitted to a receiving device, which uses it to decode the data correctly. By including both resource allocation and MCS details in the control information, the method ensures that the receiving device can accurately identify the assigned resources and apply the appropriate demodulation and decoding processes. This approach optimizes data transmission efficiency and reliability in dynamic wireless environments.
13. A base station in a wireless communication system, the base station comprising: a transceiver; and a controller configured to: determine a scheduling type of a downlink data channel either persistent or non-persistent; transmit, to a user equipment via the transceiver, data on the downlink data channel based on the determination; and receive, from the user equipment via the transceiver, acknowledgement/negative acknowledgement (ACK/NACK) information for the data, wherein, when the scheduling type is non-persistent, the ACK/NACK information is received on a first resource determined according to a downlink control channel, and wherein, when the scheduling type is persistent, the ACK/NACK information for an initial persistent data transmission is received on a second resource determined according to the downlink control channel, and the ACK/NACK information for a following persistent data transmission is received on a third resource determined by using resource information transmitted via high-layer signaling.
A base station in a wireless communication system manages downlink data transmissions using either persistent or non-persistent scheduling. The base station includes a transceiver and a controller that determines the scheduling type for a downlink data channel. For non-persistent scheduling, the base station transmits data and receives acknowledgment/negative acknowledgment (ACK/NACK) feedback from a user equipment (UE) on a first resource specified by a downlink control channel. For persistent scheduling, the base station transmits initial data and receives ACK/NACK feedback on a second resource also specified by the downlink control channel. For subsequent persistent transmissions, the ACK/NACK feedback is received on a third resource, which is determined using resource information provided via high-layer signaling. This approach optimizes resource allocation by dynamically adjusting feedback mechanisms based on the scheduling type, improving efficiency in wireless communication systems. The system ensures reliable data delivery by adapting feedback channels to different scheduling modes, reducing overhead and enhancing performance.
14. The base station of claim 13 , wherein the first resource is further determined based on an index of a resource for the downlink control channel.
This invention relates to wireless communication systems, specifically to base stations that allocate resources for downlink control channels. The problem addressed is efficiently determining and assigning resources for downlink control channels in a manner that optimizes system performance and reduces interference. The base station includes a processor configured to determine a first resource for a downlink control channel based on a resource index. The resource index is derived from a predefined set of resources allocated for control signaling. The processor further adjusts the first resource based on additional factors, such as interference conditions, channel quality, or network load, to ensure reliable transmission. The base station also includes a transmitter that sends control information using the determined resource, enabling user devices to decode the downlink control channel accurately. The resource determination process involves selecting a resource from a pool of available resources, where each resource is identified by a unique index. The index may be derived from a mathematical function or a predefined mapping table. The base station dynamically adjusts the resource allocation to avoid conflicts with other transmissions and to adapt to changing network conditions. This ensures efficient use of the available spectrum while maintaining low-latency communication. The invention improves the reliability and efficiency of downlink control channel transmissions in wireless networks by dynamically selecting and adjusting resources based on real-time conditions. This reduces the likelihood of collisions and enhances overall system performance.
15. The base station of claim 13 , wherein the scheduling type is associated with a part of control information on the downlink control channel.
A base station in a wireless communication system schedules downlink transmissions to user devices using a scheduling type that is associated with a portion of control information transmitted on a downlink control channel. The base station determines the scheduling type based on the control information, which may include resource allocation, modulation and coding scheme, or other transmission parameters. The scheduling type defines how the downlink data is transmitted, such as whether it uses dynamic scheduling, semi-persistent scheduling, or other scheduling mechanisms. The base station then transmits the downlink data to the user device according to the determined scheduling type. This approach allows for flexible and efficient resource allocation while reducing signaling overhead by associating the scheduling type with a specific part of the control information. The system ensures reliable communication by dynamically adjusting the scheduling type based on network conditions and user device requirements.
16. The base station of claim 15 , wherein the control information includes resource allocation information for data and modulation and coding scheme (MCS) information for the data.
This invention relates to wireless communication systems, specifically to base stations that transmit control information to user equipment (UE) in a wireless network. The problem addressed is the efficient and reliable transmission of control information, including resource allocation and modulation and coding scheme (MCS) details, to enable proper data communication between the base station and UE. The base station includes a transmitter configured to send control information to the UE. This control information contains resource allocation information, which specifies the time, frequency, and/or code resources allocated for data transmission. Additionally, the control information includes MCS information, which defines the modulation scheme (e.g., QPSK, 16-QAM) and coding rate (e.g., 1/2, 3/4) to be used for the data transmission. The MCS information allows the UE to decode the data correctly by matching the modulation and coding parameters used by the base station. The transmitter may also include error correction mechanisms to ensure the control information is reliably received by the UE, even in challenging wireless conditions. This ensures that the UE can accurately determine the allocated resources and the appropriate MCS for data reception, improving overall communication efficiency and reliability.
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September 8, 2020
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